METHOD OF PRODUCTION OF THE MODIFIED BRIMSTONE USED AT PRODUCTION OF THE BRIMSTONE-ASPHALT Russian patent published in 2007 - IPC C08L95/00 C08G75/14 C04B26/26 

FIELD: building materials industry; building industry; methods of production of the compositions containing brimstone and used in the highway engineering.

SUBSTANCE: the invention is pertaining to the field of the building materials industry, in particular, to production of the compositions containing brimstone, which may be used in the highway engineering at production of the brimstone-asphalt, mainly to the method of production of the modified brimstone used at production of the brimstone-asphalt. To increase the speed of the reaction process, to reduce the share of the hydrogen sulfide in the product and to increase the strength of the brimstone-asphalt the liquid brimstone having the temperature of 140-150°С is added with the ammonia-carbonic salt in amount of 150-250 g per 1 t of brimstone intermixing by means of the circulator within 20-30 minutes and then the mixture is subjected to cooling to 115-120°С and additionally introduced with dicyclopentadiene of 10-20 kg per 1 t of the brimstone and the bitumen in amount of 2-4 % from the mass of the brimstone and conduct the stirring of the mixture within 40-50 minutes at the temperature of 135-140°С, which is maintained due to the exothermic nature of the chemical reactions. After completion of the reaction of the polymerization the modified brimstone is cooled to the temperature of 120-125°С and fed for crystallization into the drum-type crystallizer for production of the scaly product suitable for production of the brimstone-asphalt.

EFFECT: the invention ensures the increased speed of the reaction process, the reduced share of the hydrogen sulfide in the product, production of the scaly product suitable for production of the brimstone-asphalt, the increased strength of the brimstone-asphalt.

3 cl, 5 ex, 2 tbl